A student wanted to determine the concentration of ethanoic acid ("CH3COOH"\text{CH}_3\text{COOH}"CH3COOH) in a brand of household white vinegar.
They pipetted 25.0 cm3 of the diluted vinegar into a conical flask and set up the apparatus as shown in the diagram below.
Before undertaking three precise, accurate titrations, the student performed a rapid rough titration.
Explain the purpose of performing this initial rough titration.
Quantitative analysis Questions
Practise Edexcel GCSE Chemistry Quantitative analysis with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.